2261507 has 4 divisors (see below), whose sum is σ = 2339520. Its totient is φ = 2183496.

The previous prime is 2261503. The next prime is 2261509. The reversal of 2261507 is 7051622.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2261507 - 2² = 2261503 is a prime.

It is a super-2 number, since 2×2261507² = 10228827822098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2261503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38963 + ... + 39020.

It is an arithmetic number, because the mean of its divisors is an integer number (584880).

2^2261507 is an apocalyptic number.

2261507 is a deficient number, since it is larger than the sum of its proper divisors (78013).

2261507 is an equidigital number, since it uses as much as digits as its factorization.

2261507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78012.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 2261507 is about 1503.8307750542. The cubic root of 2261507 is about 131.2600742078.

The spelling of 2261507 in words is "two million, two hundred sixty-one thousand, five hundred seven".